1965 Oldsmobile Cutlass Project Car Piston
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SRP offers off-the-shelf big-block Oldsmobile pistons for both .030- and .060-over applications with -5cc valve reliefs. The 4032 forgings have a silicon content of roughly 12 percent, which tends to be more brittle at high temperatures than a 2618 alloy piston. The advantage of a 4032 alloy piston is that it expands 15 percent less, which allows running tighter piston-to-bore clearance for reduced blowby and piston slap. View Related Article
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